Question

(2/9a^2+1/3b^2) ( 2/9a^2-1/3b^2)​

Answer 1

Answer:

1/81 [ 4a⁴-9b⁴ ]

Step-by-step explanation:

Now,

(2/9a^2+1/3b^2) ( 2/9a^2-1/3b^2)

=>[(2/9)a²+(1/3)b²][(2/9)a²-(1/3)b²]

=> 1/9 (2a²+3b²) . 1/9 (2a²-3b²)

=> 1/81 [ (2a²)²-(3b²)²]

=> 1/81 [ 4a⁴-9b⁴ ]